Footwear sole



FIG. 1 is a top, rear perspective view of a footwear sole in accordance with the new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a side elevation view thereof;

FIG. 5 is an opposite side elevation view thereof;

FIG. 6 is a front elevation view thereof;

FIG. 7 is a rear elevation view thereof; and,

FIG. 8 is a bottom, rear perspective view thereof.

The broken lines shown in the Figures show environmental structure that forms no part of the claimed design. 

CLAIM The ornamental design for a footwear sole, as shown and described. 